Flush-valve.



D. W. MONEIL.

PLUSH VALVE.

APPLIUATION FILED JUNE 3, 1907. 912,597, Patented Feb. 16, 1909. v

' Fir Ill/l I a J CWITNESSES: I QQWM A TTORNE Y.

screw-threaded bore. within which is seated valve, 1), from its seat. Thereupon the 119 UNITED STATES PATENT OFFICE.

DANIEL W. McNEIL, OF CINCINNATI, OHIO, ASSIGNOR TO THE JOHN DOUGLAS COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

FLUSH-VALVE Specifieation of Letters Patent.

Patented Feb. 16, 1909.

Application filed June 3, 1907. Serial No. 376,891.

or tanks, located adjacent to the device to be It is the object of my invention to provide a flush valve wherein the main valve will rise to a predetermined distance from its seat when the flush valve is'actuated,- =in which the osition of the operative valv.may be regu ated to determine the rate of discharge of the flush valve, and in which the proper relative flow of the water for flushing and for the aiterflow is obtained readily for varying pressures in the mains. This object is attained by the means described in the specification and illustrated in the accompanying drawings, in which,

Figure 1 is a central sectional view of a flush valve embodying .my invention. Fig. 2 is a sectional view taken upon line a:x of Fig. 1, the release valve being omitted. Fig. 3 is a detail sectional view showin amodified form of the release valve and o the hando erated valve. Fig. 4 is a sectional view 0 the same taken upon line g y of Fig. 3.

The housing, A, of the valve has an inlet opening, a, which is to be connected to the main supply pipe of the water, an outlet, a, which is to be connected to the pipe leading to the device to be flushed, an annular extension, a within which is located the ush rod, b, of the hand-operated valve, B. ithin the main chamber of the housing is an annular seat, a, against which the main valve, C, is seated. The main valve, C, has a tubular valve stem, 0, within which is seated a coiled spring, a, which bears at the other end against the cap, A, of the housing. The tubular valve stem carries a cup washer, or piston, 0 The main valve, C, is seated in alinement with the inlet opening, a, so that the water from the inlet may surround the main valve and take under the cup, or piston, Cap, A, has an inwardly pro ecting central stud, a, which has a central internally a set-screw, G, the position of which limits the upward movement of the main valve, O. Main valve, C, has a downwardly projecting screw-threaded stud, 0 upon which is secured a nut, 0 which proj ects into the outlet passage, below the main valve when the same is seated, so as to stand adjacent to but not to contact 'the walls of the outlet passage below the valve seat, a Below the seat, 0,3, the housing, A, is

divided by a central diaphragm, a, which is perforated to pass the wlngs, b, of the hand- 0 erated valve, B, and against which diaphragm the valve, B, is seated when the push rod, 6, is forced inward. Valve, B, has a cup washer, b", which contacts the walls of an annular extension, 0. of the housing. The outer end of the chamber formed by extension, a has a channel, a", connecting it with the discharge, a. The valve, B, is held normally away from the diaphragm, a, by a coiled spring, 6 The relative normal position of the valve, B, to the dia hragm, a, is regulated" by a set-screw, E. pon the side of the main chamber, of", a release channel, afii's formed to extend from the top of the chamber, of, and to terminate in the outlet, 0/. The opening of the channel, a", into the discharge, a, is controlled by a release valve, D, whose valve stem, (1, is in axial alinement with the push rod, 1;, of the valve, B. The valve, D, is held normally to its seat by a coiled spring, d. The walls of the channel, a, intersect the inlet channel, a, and have a a", leading into the inlet channel, a.

ort,

The size of the port, a, is regulated by a screw-plug, F, to house which, the housing, a, has a rearward extension, a, closed by a cap, 03, which may be removed for the purpose of regulating the position of the plug, F.

The operation of the device is. as follows: The normal, or closed position of the valve is illustrated in Fig. 1. In this osition the water from the mains surroun the main valve, C, and fills the chamber, a upon both sides of the cup, 6 the part of the chamber above the cup,'c having been-filled by the water from the inlet assing in through the o ening, 0. through iihe channel, a. When t e push rod, 1), is actuated by hand it carries the valve, B, to its seat against the diaphragm, 0., thus temporarily closing the outet passage, 0., below the valveseat, a, and bringing the valve stem, 5, into contact with the valve stem, d, thereby raising the release the water from the inlet, a,

water in the chamber, a above the cup, 0, is put into communication with the outlet, or discharge, a, through the channel, a", and the pressure of the water in the chamber, a below the cup, 0, will throw the main valve, Q, completely from its seat and carry it upward until the movement away from its seat is limited by its coming into contactwith the regulating screw, G. The main valve will alwa s be carried upward until 1t meetsv the regu at screw, G, for the reason that when the rod, is pushed inward, the hand-operated valve, B, closes the discharge so as to prevent any release of pressure beneath the main valve, C, at the same time that the pressure is released above the cup, or ston, c. As soon as the rod, 6, is released y the person actuating the same, the spr ng, b carries the valve, B, away from Its seat, and asses into the outlet, (1, through the wings, of the valve, B. The rate of discharge depends upon the relative position of the valve, B, to the diaphragm, a, which is regulated accordlng to the pressure in the mains, bymeans of the screw, E. As soon' as the stem, (1, is released b the stem, g, valve, D, assumes its seat an thewater passes into .channel, a,

' through the port, a, passes into the top of the valve chamber, a and as this chamber fills with water above the-cup, 0 carries the main valve, C, towards its seat. The length of time which is consumed in filling the chamber, a above the cup, 0 is regulated by the position of the plug, F, so that by a regulation of the position of the hand-oper-- ated valve in the discharge channel, a, and of the size of the port, a in the release channel, a, the rate of discharge and the length of time the water will run are determined. The flow of the water from the inlet, a, to the outlet, 0., while the projections, 0 c, of the main valve, C, are well above the valve seat, a is the stronger flow known as the flushing flow. After the rojections, c 0, have entered the port be ow the valve seat, a the gow is lessened and is known as the after- In order to regulate the length of the flush without unduly lengthening the time of afterflow, I have provided the set-screw, G, by means of which it is seen that the distance the main valve, 0, is raised from its seat may be regulated, so as to regulate the length of the flushing operation, without affecting the after-flow.

In the modifications shown in Fig. 3 and Fi 4, instead of having a reciprocating va ve to be operated by hand, I have shown a rotating, or butterflyvalve, B, the rotation of which will bring it into contact with a release valve, 1). The butterfly valve, B, is held in its normal position by a coiled spring, I). When the butterfly valve, B, is in a more inclined position in relation to the walls of the outlet, a, it limits the orifice thereof and when it is in its more axial position in relation to the outlet, a, it enlarges the orifice. The normal position of the butterfly valve, B, is regulated by a set-screw, E. When it is desired to actuate the flush valve for this form of hand-o erated valve, its valve stem, 12, is rotate by grasping the handle, b

What I claim is:

1. In a flush valvethe combination of a housing having an inlet and an outlet opening, a valve seat in the housing between the in et and outlet openings, a main valve in the housing, -means, of conveyin the pressure of water from the inlet to t e valve so that the pressure'of fluid tending to hold it to its seat is greater than that tending to raise it from its seat, a release channel in the housing leading into the outlet openin for releasing thepressure of the fluld hofding the main valve to its seat, a release valve to control the opening of the release channel, a means to be moved by a rson for actuating the release valve an so positioned that when contacting the release valve it limits the orifice between the main valve and the outlet and permits the discharge of the release channel into the outlet, thereby insuring a full lift of the main valve from its seat. I

\ 2. A flush valve having an inlet, a discharge, a main valve, means whereby when the main valve is seated the pressure of the fluid tending to hold the valve to its seat is eater than that tending to lift it and a reease valve for relieving the, pressure of fluid means of conveying unequal-pressures from i the inletto the main valve the greater pressure tending to hold the valve to its seat and the lesser to carry the valve from its seat,

the combination of a release channel leading into the discharge outlet of the valve, a release valve in the channel for controlling the fluid pressure tending to hold the main valve to its seat, a third hand 0 rated valve located in the discharge out et and adapted to actuate the release valve and open the release channel to the discharge outlet and to limit the outlet of the mam valve simultaneously, to insure a full lift of the main valve.

4. In a flush valve the combination of a housing having a main valve chamber, a valve seat in one end of the main chamber, an inlet opening upon one side of the seat,

a discharge opening upon the other side, a release channel connecting the outlet opening with the end of the chamber opposite the end in which the valve seat is located, a port connecting the inlet opening with the release-channel, a means for regulating the size of said port, a main valve within the chamber, a release valve located at the point where the release channel enters the outlet opening, a third valve located in the 10' outlet and to be operated by a person to contact the release valve,- and a means of regulating the osition of the third valve in the outlet to c ange, the size of the outlet.

DANIEL W. MoNEIL. Witnesses:

WALTER F. MURRAY, AGNES MGCORMACK. 

